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    • 5. 发明申请
    • PRODUCTION OF RECOMBINANT POLYPEPTIDES BY BOVINE SPECIES AND TRANSGENIC METHODS
    • 通过牛肉种和转基因方法生产重组多糖
    • WO1993025567A1
    • 1993-12-23
    • PCT/US1993005724
    • 1993-06-15
    • GENPHARM INTERNATIONAL, INC.DEBOER, Herman, A.STRIJKER, ReinHEYNEKER, Herbert, L.PLATENBURG, GerardLEE, Sang, HePIEPER, Frank
    • GENPHARM INTERNATIONAL, INC.
    • C07H21/00
    • C12N15/8509A01K67/0278A01K2207/15A01K2217/00A01K2217/05A01K2227/101A01K2227/105A01K2267/01A23C9/20C07K14/4732C07K14/765C07K14/79C12N9/2462C12N9/6464C12N15/85C12N2830/008C12N2830/85C12Y304/21069
    • A transgene for producing recombinant polypeptides in the milk of transgenic bovine species comprises at least one expression regulation sequence, a secretory DNA sequence encoding a secretory signal sequence which is functional in mammary secretory cells of the bovine species and a recombinant DNA sequence encoding the recombinant polypeptide. Also included are methods for producing transgenic bovine species. The method includes introducing the above transgene into an embryonal target cell of a bovine species, transplanting the trangenic embryonic target cell formed thereby into a recipient bovine parent and indentifying at least one female offspring which is capable of producing the recombinant polypeptide in its milk. The invention also includes transgenic bovine species as well as the milk from such transgenic bovine species. Methods are also provided for producing transgenic non-human mammals having a desirable phenotype. The method comprises first methylating a transgene followed by introduction into fertilized oocytes. The oocytes are then cultured to form pre-implantation embryons. Thereafter, at least one cell is removed from each of the pre-implantation embryons and the DNA digested with a restriction endonuclease capable of cleaving the methylated transgene but incapable of cleaving the unmethylated form of the transgene.
    • 用于在转基因牛物种的乳中产生重组多肽的转基因包括至少一个表达调控序列,编码在牛物种的乳腺分泌细胞中有功能的分泌信号序列的分泌DNA序列和编码重组多肽的重组DNA序列 。 还包括用于生产转基因牛物种的方法。 该方法包括将上述转基因导入牛种的胚胎靶细胞中,将由此形成的转基因胚胎靶细胞移植到受体牛的母体中,并鉴定能够在其乳中产生重组多肽的至少一个雌性后代。 本发明还包括转基因牛物种以及来自这种转基因牛物种的牛奶。 还提供了用于产生具有所需表型的转基因非人哺乳动物的方法。 该方法首先将转基因甲基化,然后引入受精卵母细胞。 然后培养卵母细胞以形成植入前胚胎。 此后,从每个植入前胚胎中移除至少一个细胞,并用能够切割甲基化的转基因但不能切割未甲基化形式的转基因的限制性内切核酸酶消化的DNA。
    • 6. 发明申请
    • TRANSGENIC NON-HUMAN ANIMALS CAPABLE OF PRODUCING HETEROLOGOUS ANTIBODIES
    • 可产生异位抗体的转基因非人动物
    • WO1993012227A1
    • 1993-06-24
    • PCT/US1992010983
    • 1992-12-17
    • GENPHARM INTERNATIONAL, INC.LONBERG, NilsKAY, Robert, M.
    • GENPHARM INTERNATIONAL, INC.
    • C12N15/00
    • A01K67/0276A01K67/0278A01K2207/15A01K2217/00A01K2217/05A01K2217/075A01K2227/105A01K2267/01A01K2267/03A01K2267/0381A61K38/00C07K16/00C07K16/2812C07K16/3007C07K16/4291C07K16/44C07K2317/21C07K2317/24C12N15/8509C12N15/90
    • The invention relates to transgenic non-human animals capable of producing heterologous antibodies and transgenic non-human animals having inactivated endogenous immunoglobulin genes. In one aspect of the invention, endogenous immunoglobulin genes are suppresed by antisense polynucleotides and/or by antiserum directed against endogenous immunoglobulins. Heterologous antibodies are encoded by immunoglobulin genes not normally found in the genome of that species of non-human animal. In one aspect of the invention, one or more transgenes containing sequences of unrearranged heterogolous human immunoglobulin heavy chains are introduced into a non-human animal thereby forming a transgenic animal capable of functionally rearranging transgenic immunoglobulin sequences and producing a repertoire of antibodies of various isotypes encoded by human immunoglobulin genes. Such heterologous human antibodies are produced in B-cells which are thereafter immortalized, e.g., by fusing with an immortalizing cell line such as a myeloma or by manipulating such B-cells by other techniques to perpetuate a cell line capable of producing a monoclonal heterologous antibody. The invention also relates to heavy and light chain immunoglobulin transgenes for making such transgenic non-human animals as well as methods and vectors for disrupting endogenous immunoglobulin loci in the transgenic animal.
    • 本发明涉及能够产生具有失活的内源免疫球蛋白基因的异源抗体和转基因非人动物的转基因非人动物。 在本发明的一个方面,内源性免疫球蛋白基因被反义多核苷酸和/或针对内源性免疫球蛋白的抗血清抑制。 异源抗体由非人动物种类的基因组中通常不存在的免疫球蛋白基因编码。 在本发明的一个方面,将含有未经修饰的杂种人免疫球蛋白重链序列的一个或多个转基因导入非人动物,从而形成能够功能重排转基因免疫球蛋白序列的转基因动物,并产生编码的各种同种型的抗体谱库 通过人免疫球蛋白基因。 这样的异源人抗体是在B细胞中产生的,其后被永生化,例如通过与永生化细胞系如骨髓瘤融合,或者通过其它技术操纵这样的B细胞,使能够产生单克隆异源抗体的细胞系 。 本发明还涉及用于制备这种转基因非人动物的重链和轻链免疫球蛋白转基因以及用于破坏转基因动物内源性免疫球蛋白基因座的方法和载体。